2011701161 has 2 divisors, whose sum is σ = 2011701162. Its totient is φ = 2011701160.

The previous prime is 2011701119. The next prime is 2011701169. The reversal of 2011701161 is 1611071102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2008742761 + 2958400 = 44819^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011701161 - 2¹⁴ = 2011684777 is a prime.

It is a super-2 number, since 2×2011701161² = 8093883122337495842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2011701169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005850580 + 1005850581.

It is an arithmetic number, because the mean of its divisors is an integer number (1005850581).

Almost surely, 2^2011701161 is an apocalyptic number.

It is an amenable number.

2011701161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011701161 is an equidigital number, since it uses as much as digits as its factorization.

2011701161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 2011701161 is about 44851.9917172025. The cubic root of 2011701161 is about 1262.3733634507.

Adding to 2011701161 its reverse (1611071102), we get a palindrome (3622772263).

The spelling of 2011701161 in words is "two billion, eleven million, seven hundred one thousand, one hundred sixty-one".